Consider solving a linear system Ax=b using iterative methods. If A is positive definite and tridiagonal matrix, and the eigenvalues of the Gauss-Seidel iterative matrix are A1 = 0.2305, 12 = 0.15, and A3 = -0.3056. Find the spectral radius of the Jacobi iterative matrix, and the spectral radius of the SOR iterative matrix.